Pyrseas is a tool that provides frameworks and utilities to upgrade and maintain the http://www.aliyun.com/zixun/aggregation/22.html "> relational database. It uses a Dbtoyaml utility to create a yaml description of the PostgreSQL database table and uses the YAMLTODB utility to generate SQL statements to modify the input YAML specification of the database match. It is also used to develop data management tools to complement a flexible database development process.
Pyrseas version 0.4.0 now supports additional DDL features including: casts, constraint triggers, dynamically loaded C language features, operators, operator classes, and so on. The document is cleaned and strengthened, the redundancy method is removed, and the obj_ description/col_ description function is used to replace the direct query Pg_ description.
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